Light goes from medium A into medium B.If you measure that the angle the rays make with the normal in A is less than the angle they make with the normal in B,then you can conclude that the refractive index of A is less than the refractive index of B.

Question

Quizplus · Accepted Answer

When light enters a medium with a lower refractive index, it bends away from the normal, resulting in a larger angle with the normal in the second medium. Therefore, if the angle in medium A is less than in medium B, the refractive index of A is greater than that of B.

Light Goes from Medium a into Medium B